fix(bib): seal closed dockets after 90 quiet days, not 30

regulations.gov kept posting CY2027 PFS comments well after close: the
2026-10-27 catch-up found 8 new ones 42 days in, and the first nightly
Comment Pull then sealed CMS-2026-2377 under the 30-day rule, so any
later postings would have been missed. 90 days keeps a closed docket on
the nightly walk (a couple of watermarked listing calls) through the
posting tail. stack.toml and the code default now agree, and walk_docket
defaults to the shared constant.

src/bib/dockets.py

@@ -17,7 +17,7 @@ from datetime import date, timedelta
 from pathlib import Path
 from typing import Iterable
 
-DEFAULT_QUIET_DAYS = 30
+DEFAULT_QUIET_DAYS = 90
 
 
 @dataclass(frozen=True)
@@ -82,7 +82,7 @@ def _cfg():
 
 
 def quiet_days() -> int:
-    """``[comments] seal_quiet_days`` from stack.toml, default 30."""
+    """``[comments] seal_quiet_days`` from stack.toml, default 90."""
     c = _cfg()
     if "comments" in c and "seal_quiet_days" in c.comments:
         return int(c.comments.seal_quiet_days)

src/bib/regulations_gov.py

@@ -36,7 +36,7 @@ from typing import TYPE_CHECKING, Callable, Iterator
 
 import httpx
 
-from bib.dockets import Docket
+from bib.dockets import DEFAULT_QUIET_DAYS, Docket
 from bib.item import Source
 from bib.tag import Tag
 
@@ -954,7 +954,7 @@ def walk_docket(
     attachments: bool = False,
     limit: int = 0,
     force: bool = False,
-    quiet_days: int = 30,
+    quiet_days: int = DEFAULT_QUIET_DAYS,
     today: date | None = None,
     scratch_root: Path = Path(".state/comments"),
     echo: Callable[[str], None] | None = None,

stack.toml

@@ -80,7 +80,10 @@ bib = "data/bib.sqlite"
 zotero = "data/zotero/data/zotero.sqlite"
 
 [comments]
-seal_quiet_days = 30   # days after a docket's comment close date before an empty pull seals it
+# Days after a docket's comment close date before an empty pull seals it.
+# 90, not 30: reg.gov kept posting CY2027 PFS comments 6+ weeks after close
+# (8 late postings found 2026-10-27, 42 days in).
+seal_quiet_days = 90
 
 [storage]
 bib = "data/bib/storage"

tests/bib/test_dockets.py

@@ -115,7 +115,7 @@ class TestQuietDays:
         from conf import _Cfg
 
         monkeypatch.setattr(mod, "_cfg", lambda: _Cfg({}))
-        assert quiet_days() == 30
+        assert quiet_days() == 90
 
     def test_reads_section(self, monkeypatch):
         import bib.dockets as mod